湿陷性黄土–红砂岩集成水泥土填筑材料冻融循环试验研究
摘要:在湿陷性黄土地区，基槽回填区常因回填土自身沉降和湿陷等问题产生区域大面积沉降，对建筑正常使用和居民正常生活造成了严重影响。根据区域工程实际，提出湿陷性黄土–红砂岩集成水泥土填筑材料，并通过设置湿陷性黄土、红砂岩、水泥及水的不同占比进行正交试验，得到了利用黄土、红砂岩开发新型基槽回填材料的最佳配合比。通过对集成水泥土试件与素水泥土试件进行冻融循环试验，发现集成水泥土的抗冻性能明显优于素水泥土，具有更好的力学性能与使用耐久性。本研究为湿陷性黄土地区填筑材料的工程应用提供了一定的参考。
Abstract:In the collapsible loess area, the backfill area of the foundation trough often produces a large area of settlement due to the self-subsidence and collapsibility of backfill, which has a severe impact on the regular use of buildings and the everyday life of residents. According to the regional engineering practice, the collapsible loess-red sandstone integrated cement-soil filling material is put forward. The orthogonal test was carried out by setting different proportions of collapsible loess, red sandstone, cement, and water. The best mixture ratio of developing new foundation trench backfill material using loess and red sandstone was obtained. Through freeze-thaw cycling tests on integrated cement-soil specimens and plain cement-soil specimens, it was found that the freeze-thaw resistance of integrated cement-soil specimens is significantly better than that of plain cement-soil specimens, with better mechanical properties and durability. This study provides some reference for the engineering application of fill materials in collapsible loess areas.
中文标题：
湿陷性黄土–红砂岩集成水泥土填筑材料冻融循环试验研究
Experimental Study on Freeze-thaw Cycle of Collapsible Loess Red Sandstone Integrated Cement Soil Filling Material
作者：
金生莲1,,杨作青1,张鑫1,曾海珍1,朱彦鹏2,
Jin Shenglian1,,Yang Zuoqing1,Zhang Xin1,Zeng Haizhen1,Zhu Yanpeng2,
作者简介:金生莲，女，1983年生，汉族，甘肃兰州人，大专，工程师，主要从事地质灾害治理和建筑地基基础专业技术管理及研究工作。E-mail：876883244@qq.com
通讯地址：
1.甘肃西部岩土工程有限责任公司，甘肃兰州 730050 2.兰州理工大学，甘肃兰州 730050
1.WesternGeotechnicalCo.,Ltd.,Lanzhou730050,Gansu,China 2.CollegeofCivilEngineeringLanzhouUniversityofTechnology,Lanzhou730050,Gansu,China
中图分类号:TU 411.3
doi:10.3969/j.issn.1007-2993.2023.05.014
出版物：岩土工程技术
收稿日期:2022-06-22
修回日期:2022-12-27
录用日期:2023-05-06
刊出日期:2023-10-16
关键词:湿陷性黄土–红砂岩集成水泥土填筑材料,正交试验,耐久性能,冻融循环试验
Key words:collapsible loess-red sandstone integrated cement-soil filling material,orthogonal test,durability,freeze-thaw cycling test
文档包含图片数量：图片(11)张
文档包含表格数量：表格(5)个
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基金项目：
基金项目:国家自然科学基金面上项目（51978321）；国家重点研发计划（2019YFD1101004）；教育部长江学者和创新团队支持计划项目（IRT17R51）
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